Planetary driving-gear



M. CJHO RINE. PLANETARY DRIVING GEAR.

APPLICATION FILED MAY5,1919.

17 567 Y Patented Oct. 4, 1921.

w/mss; nwmron J M C.

I z By ATTO ,vns

UNITED- STATES PATENT OFFICE.

mm C. HORINE, OF NEW YORK, N.. Y., ASBIGNOB '10 INTERNATIONAL IO'IOR COMPANY, OF NEW YORK, N. Y., A CORPORATION 01' DELAWARE.

rnmnumr nmvn'm-omn.

Specification of Letters Patent.

Patented Oct. 4.-, 1921.

lpplloation nled Kay 5, 1919. Serial 110. 294,908.

To all whom it may cmwem:

Be it known that I, MERRILL O. Honmn, a citizen of the United States, resid ng in the borough of Manhattan of the city of New York, in the State of New York, have invented certain new and useful Improyements in Planetary Driving-Gears, of which the following is a specification, reference being had to the accompanying drawmg, formin a part hereof.

his invention relates planetary driving gear especially suitable for use in motor vehicles where a great reduction is desired between the motor and the axle, as in the case of heavy trucks. The invention has for its object to provlde planetary gearing in which a maximum reduction will be obtained in a structure which is relaand is characterized by fewness of parts. This elimination of parts is of great importance where, as in the present instance, one of the usual rotating sun gears and associated shaft are eliminated; The invention will be described in detail hereinafter in connection with the illustrated embodiment showing its application to a motor vehicle.

The single figure shows in horizontal section the improved planetary drivmg gear and so much of the associated driving mechtively compact anismof the motor vehicle as is necessary foran understanding of the application of the ear thereto.

hile it will be understood as the description proceeds that the driving gear 'is not to be limited in its use to a motor vehicle since its advantages will make it desirable for use generally for the driving of shafts where a reduction is desired, one type of driven shaft for a motor vehicle has been illustrated. Other types of motor vehicle live axles may be employed without departing from the spirit of the invention. In the drawing the casing a for the improved planetary gear is shown as bolted to a split casing 6 into which extend axle sections a, d, arranged to receive power through the master bevel gear e which may be considered throughout the specification and claims as the driven member. Power is derived from what may be termed the propeller shaft 7 from any available source. This shaft may be journaled in an opening formed in the to an improvedend wall of the casing on ball bearings g and carry at its inner end a bevel pinion h. In the face of the bevel pinion It may be supported a ball bearing i in which is journaled one end of the shaft is of the driven spider, the other end of the shaft bein conveniently journaled on ball bearings supported in' a manner to be later descfibed. On the shaft in of the spider are formed the usual oppositely extending arms 70', is, disposed, res ectively, at right an les to one another. 11 each of these radisfily extending arms 1s supported a compound planetary pinion m, m. The hub of this double pin- 1on may be journaled by two spaced ball bearings n, n on each of such arms is, k and locked thereon by a nut 0 at the end of the shaft. The inner pinion m of each com- 7 pound pinion meshes with the driving pin- 1011 h. The outer pinion m of each planetary p1n1on meshes with a sun gear 10 which is bolted to the casing b of the driven member c. It is in this sun gear p that the hearing Z for the spider shaft 70 may be threaded or otherwise secured. On the end of the spider shaft 70 in mesh with the driven gear 6 is a bevel pinion 70?.

I The action of the. improved planetary drivin gear is as follows: Power being applied t rough the propeller shaft f is transmitted throu h the pinion h to each of the compound p anetary pinions through the inner pinion m thereof and each of these pinions with the spider arms is, k is given a planetary motion about the shaft is by reason of the engagement of the outer pinion m of each planetary inionwith the nonrotatable sun gear 1). y reason of the improved construction shown the actual driving force for'the driven member 6 is derived from the spider shaft 70 itself sincethe arms k, 10 thereof, on which the planetary pinions are carried, are into ral with said shaft and the shaft is has fixe thereon the driving pinion 10 which is in mseh with the driven gear 0.

and the utmost compactness, stren th and accessibility. The reduction secured in the illustrated embodiment is four to one.

I claim as my invention:

1. Planetary gearing comprising in combination a power shaft, a rotatable spider including a shaft section and radial arms thereon, planetary compound pinions on the arms, a pinion on the power shaft in mesli with one of the pinions of each compound pinion, a nonrotatable sun gear with which the other pinion of each compound inion meshes, a bearing for the spider sha carried in the face of the pinion on the power shaft and a second bearing for the spider shaft supported with the sun gear.

2. In a motor vehicle, in combination with the live axle sections therefor, a driven ear for the axle sections, a nonrotatable xed housing therefor, a propeller shaft, a pinion thereon, planetary reduction gearing comprising a rotatable spider including a shaft section and radial arms thereon, planetary compound pinions on the arms, a. pinion on the propeller shaft in mesh with one of the pinions'of each compound pinion, a nonrotatable fixed sun gear bolted to the driven gear housing with which the other pinion of each compound pinion meshes, a pinion the axle sections, and a housing for the c planetary gearing bolted to the first named ousmg.

3. In combination, a driven gear, a housing therefor, a nonrotatable sun gear carried by the housing, a power shaft, planetary gearing operatively engaged with the ower shaft and the sun gear, a rotatable spi er on which said planetary gearing is carried, a ring secured to the sun gear and a bearing for the shaft of said spider mounted in the ring. 4. In combination, a driven gear, a housng therefor, a nonrotatable sun gearcarried by the housing, a power shaft, a pinion on the power shaft, planetary gearmg operatively engaged wlth said pinion and the sun gear, a rotatable spider on which said planetary gearing is carried a ring secured to the sun gear, a bearing for'the shaft of said spider mounted in the ring, and a second bearing for the spider shaft carried in the pinion on the power shaft.

This sp)ecification signed this first day of May, A.. 1919.

MERRILL o. HORINE. 

